- #1

guroten

- 32

- 0

## Homework Statement

I need help proving that given two surfaces

any two points of surface X can be joined by a curve in X, while the same is not true of Y.

## Homework Equations

X={(x,y,z):x^2+y^2-z^2=1} and Y={(x,y,z):x^2+y^2-z^2=-1}

## The Attempt at a Solution

I'm not sure where to start. If the problem had said line instead of curve, I think I could do a proof by contradiction, but as it is I don't know.